Regulating magnetic skyrmions in multiferroic monolayer MnOBr
Cong Hou1,2, Yibo Sun1,2, Yuhang Lu1,2
1State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China. junni@mail.tsinghua.edu.cn.
Nanoscale
|October 2, 2024
Summary
Novel two-dimensional multiferroic materials like MnOBr enable magnetic skyrmion discovery. These materials allow skyrmion control using magnetic fields and strain, paving the way for spintronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Two-dimensional (2D) multiferroic materials offer a unique platform for exploring exotic magnetic phenomena.
- Magnetic skyrmions, topologically protected spin textures, are promising for next-generation spintronic applications.
Purpose of the Study:
- Investigate the properties and control of magnetic skyrmions in a novel 2D multiferroic monolayer, MnOBr.
- Explore the phase transitions and skyrmion lattice formation under external stimuli.
Main Methods:
- First-principles calculations to determine electronic and magnetic properties.
- Monte Carlo simulations to model spin dynamics and phase transitions.
- Machine learning techniques to construct phase diagrams under magnetic fields and strain.
Main Results:
- Monolayer MnOBr exhibits intrinsic magnetic skyrmions without an external magnetic field.
- External magnetic fields induce the formation of a skyrmion lattice from labyrinth domains.
- A comprehensive phase diagram reveals spin texture transitions influenced by magnetic fields and biaxial strain.
- Heterostructures with Janus CdClBr demonstrate controlled creation and annihilation of skyrmions via polarization switching.
Conclusions:
- Monolayer MnOBr is a promising material for intrinsic magnetic skyrmion generation.
- External stimuli and heterostructure engineering offer effective routes for skyrmion manipulation.
- These findings highlight the potential of MnOBr in the development of advanced spintronic devices.
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